diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index dd83cb7085bdf1da1035d61b4ca023ad54140915..4977edfe91187de42ddb41331286f49ad982c9ad 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -511,7 +511,7 @@ release-docs:
     refs:
       - /^release-.*/
   script:
-    - apt-get update && apt-get install -y git make sed wget
+    - apk add git make sed wget
     - make docs
     - eval $(ssh-agent -s)
     - echo "$CI_KEY_PRIVATE" > /root/.ssh/id_rsa && chmod 0600 /root/.ssh/id_rsa